package j03zuoye;

interface IPlayer{
    void play();
    void pause();
    void stop();
}

class Mp3 implements IPlayer{
    int memorySize;//

    public Mp3(int memorySize) {
        this.memorySize = memorySize;
    }

    @Override
    public void play() {

    }

    @Override
    public void pause() {

    }

    @Override
    public void stop() {

    }
}

public class Z4player {
    public static void main(String[] args) {
        IPlayer player1 = new Mp3(3);
        player1.pause();
    }
}
